wheel and axle

基本解釋

The wheel and axle is a rotating lever.
輪軸是一個(gè)轉(zhuǎn)動(dòng)的杠桿。
mashuai.21.blog.163.com
The wheel and axle of the Han Dynasty are an important subject of study for the history of Chinese science and technology.
漢代的輪軸工藝，是中國古代車制研究的重要內(nèi)容，也是中國科技史上的重大課題之一。
Optimized design of Rail wheel and axle is finished. Conclusion This result satisfies our national railway standard. The maximum stress is less than the yield stress.
結(jié)論實(shí)現(xiàn)火車輪軸的優(yōu)化設(shè)計(jì)，優(yōu)化後輪軸的最大應(yīng)力均小於屈服應(yīng)力，滿足我國鉄路的標(biāo)準(zhǔn)要求。

The crowbar swung up into the air and the free end knocked Fyodorov off his feet and out of his senses, then threw him into the second wheel and smashed his head against the axle box.
NEWYORKER: Among Animals and Plants
Helping Komatsu persuade the mine operator to switch was a new drive system that instead of the conventional mechanical axle and cogs uses rear-wheel-mounted electrical motors.
FORBES: Magazine Article

a simple machine for raising weights in which a rope unwinding from a wheel is wound onto a cylindrical drum or shaft coaxial with or joined to the wheel to provide mechanical advantage